Especially at EDM shows. I literally just deal with a few DJs who somehow don't realize they need 1/4 in. or xlr (stop expecting to plug into a PA with RCA or an aux cord. It's not a car or a TV) I play the mute button.
My high school band director hooked me up with a folder full of jazz charts and method books my senior year. There was also about 8 hrs of dating advice on tape. It was